uma/packages/core/contracts/common/test/MintableERC721.sol

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";

// Test ERC721 contract that allows free minting
contract MintableERC721 is ERC721 {
    constructor(string memory _name, string memory _symbol) ERC721(_name, _symbol) {}

    function mint(address to, uint256 tokenId) public {
        _safeMint(to, tokenId);
    }
}